Gate-tunable entangled photon pair generation
US12253788B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Oct 10, 2022 |
| Grant date | Mar 18, 2025 |
| Priority date | — |
| Expiry date | Sep 15, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/365
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electro-optical modulating device and method that provides efficient control of the nonlinear propagation constant in an optical waveguide are featured. The electro-optical modulating device provides large wavelength tunability of the generated entangled photon pairs in real-time by using an applied external bias voltage. The electro-optical modulating device uses gate-tunable material at locations near the optical waveguide. The application of an external bias voltage creates a variable field-effect which in turn varies the optical dielectric properties of the waveguide. The result is a compact active, highly efficient wavelength-tunable integrated quantum photonic device for tunable entangled photon pair generation using an external bias voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.